Lambda Aquilae
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| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Aquila |
| Right ascension | 19h 06m 14.9384s |
| Declination | -04° 52′ 57.195″ |
| Apparent magnitude (V) | 3.427 |
| Characteristics | |
| Spectral type | B9Vn |
| U-B color index | -0.27 |
| B-V color index | -0.09 |
| R-I color index | -0.09 |
| Astrometry | |
| Radial velocity (Rv) | -12 km/s |
| Proper motion (μ) | RA: -19.68 mas/yr Dec.: -90.37 mas/yr |
| Parallax (π) | 26.05 ± 0.81 mas |
| Distance | 125 ± 4 ly (38 ± 1 pc) |
| Absolute magnitude (MV) | 0.51 |
| Details | |
| Mass | 2.8 M☉ |
| Radius | 2.3 R☉ |
| Luminosity | 84 L☉ |
| Temperature | 11,500 K |
| Metallicity | ? |
| Rotation | < 21 hours (variable) 0,00552 Year |
| Age | ? years |
| Other designations | |
|
GSC 05136-02357, 2MASS J19061494-0452571, TD1 23873, 16 Aql, HD 177756, N30 4230, TYC 5136-2357-1, BD-05° 4876, HGAM 731, PLX 4438, UBV M 23483, CEL 4697, HIC 93805, PMC 90-93 510, UBV 16194, FK5 717, HIP 93805, PPM 202530, uvby98 100177756, GC 26285, HR 7236, ROT 2720, GCRV 11555, IRAS 19035-0457, SAO 143021, JP11 3073.
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| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
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Lambda Aquilae (λ Aql / λ Aquilae) is a star in the constellation Aquila. It has the traditional name Al Thalimain, which it shares with ι Aquilae. The name is derived from the Arabic الثالمين al-thalīmain "the two ostriches". Lambda Aquilae is more precisely Al Thalimain Prior.
Lambda Aquilae is a blue-white B-type main sequence dwarf with an apparent magnitude of +3.43. It is approximately 125 light years from Earth.
[edit] Location
The star's location in the constellation of Aquila is shown in the following map:
[edit] References
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